Virginia, I can’t help with locations IN Chester because in July I stayed nearby at Gladstones’s Library (I had a car) and just spent a day in Chester. From my report:
*Hawarden: Drove in at dinner time so just walked the grounds and next door church. The following day was an easy day in Chester - I took a short boat ride on the River Tay, walked the walls and the Roman Garden, and attended evensong at Chester Cathedral (should I confess it might have been my favorite?).
Pontcysyllte Aqueduct: On the way from Hawarden to Manchester (ok, not on the way at all…but not far out of the way), I drove to Llangollen Wharf and took a 2 hr canal boat ride that ended after crossing the Aqueduct. Stunning. A slow relaxing ride along the canal, Welsh cream tea, crossing the VERY tall aqueduct, and an included quick bus trip back to town. This has also been on my list to see for several years, but I wasn’t expecting to get there this year. :)*